JP3454637B2 - Construction machinery tank structure - Google Patents
Construction machinery tank structureInfo
- Publication number
- JP3454637B2 JP3454637B2 JP14819596A JP14819596A JP3454637B2 JP 3454637 B2 JP3454637 B2 JP 3454637B2 JP 14819596 A JP14819596 A JP 14819596A JP 14819596 A JP14819596 A JP 14819596A JP 3454637 B2 JP3454637 B2 JP 3454637B2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- plate
- seat
- welded
- seat plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Component Parts Of Construction Machinery (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、油圧ショベルなど
建設機械，作業車両に搭載している燃料タンク，作動油
タンク等のタンクの構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a construction machine such as a hydraulic excavator, a tank mounted on a work vehicle such as a fuel tank and a hydraulic oil tank.
【０００２】[0002]
【従来の技術】図７は、実開平６−８２４０６号公報に
記載されている従来技術の一実施例タンク構造を示す要
部切開図である。図８は実開平６−８２４０６号公報に
は記載されていないが、図７のＡ−Ａより見た図であ
る。図７及び図８に示すタンク構造では、箱形に形成さ
れたタンク１の下面部に当て板部２をそなえたボス（ね
じ穴付ボス３をいう）形状の座板金具４を溶着し、その
座板金具４をボルト５にて車体６に対し締付固定してい
る。2. Description of the Related Art FIG. 7 is a partial cutaway view showing a tank structure of an embodiment of the prior art disclosed in Japanese Utility Model Laid-Open No. 6-82406. Although not shown in Japanese Utility Model Laid-Open No. 6-82406, FIG. 8 is a view seen from AA in FIG. 7. In the tank structure shown in FIGS. 7 and 8, a boss (referred to as a boss 3 with a screw hole) -shaped seat plate fitting 4 having a contact plate 2 is welded to the lower surface of a box-shaped tank 1, The seat plate fitting 4 is fastened and fixed to the vehicle body 6 with bolts 5.
【０００３】[0003]
【発明が解決しようとする課題】油圧ショベルなど建設
機械に搭載されている従来技術の一実施例タンク（図７
及び図８に示す）では、当て板部をそなえたボス形状の
座板金具をタンクの下面部に溶着している。油圧ショベ
ルの掘削作業時には車体に大きな衝撃力や振動が作用す
るが、従来技術の座板金具には上記衝撃や振動を緩和で
きる機能が殆どなかった。そのためにタンクの溶接部た
とえば図８に示す符号イの部分や、薄厚鋼板などに亀裂
が入るので、メンテナンス上具合が悪かった。本発明
は、タンクの相対応する外側面と、下面とのなす角部の
長手方向に沿って長寸の座板をそれぞれ設け、かつ底面
部にひずみ防止部材を設けるようにしたタンク構造を提
供することを目的とする。One example of a conventional tank mounted on a construction machine such as a hydraulic excavator (see FIG. 7).
And FIG. 8), a boss-shaped seat plate metal fitting having a contact plate portion is welded to the lower surface of the tank. A large impact force or vibration acts on the vehicle body during excavation work of the hydraulic excavator, but the seat plate fitting of the conventional art has almost no function of reducing the impact or vibration. As a result, the welded portion of the tank, for example, the portion marked with a in FIG. 8 or a thin steel plate, is cracked, and the maintenance is not good. The present invention provides a tank structure in which long seat plates are provided along the longitudinal direction of the corners formed by the corresponding outer surface and the lower surface of the tank, and a strain prevention member is provided on the bottom surface. The purpose is to do.
【０００４】[0004]
【課題を解決するための手段】本発明では、薄厚鋼板を
箱形のタンクに形成し、そのタンクの下面部に車体に対
する取付用の座板を溶着し、その座板をボルト締付によ
り車体に固定している燃料タンク，作動油タンクなどの
タンクにおいて、タンクの相対応する外側面と、下面と
のなすそれぞれの角部の長手方向に沿って、たて板部と
横板部に屈曲せしめた断面形状が略Ｌ形で、且つ長寸の
座板を長手方向に設け、それぞれの座板のたて板部をタ
ンクの外側面部に、かつ横板部をタンクの下面部に溶着
するとともに、横板部に設けたボルト締付部と、タンク
の下面部との間に間隔を設けた。また、前記座板の縁部
のタンクに対する隅肉溶接部の溶接長さを、所定のピッ
チで間隔をおくようにした。According to the present invention, a thin steel plate is formed in a box-shaped tank, a seat plate for attachment to a vehicle body is welded to the lower surface of the tank, and the seat plate is bolted to the vehicle body. In tanks such as fuel tanks and hydraulic oil tanks that are fixed to the vertical plate, bend the vertical plate and the horizontal plate along the longitudinal direction of the corners formed by the corresponding outer surface and lower surface. A long seat plate having a substantially L-shaped cross section is provided in the longitudinal direction, and the vertical plate part of each seat plate is welded to the outer surface part of the tank and the horizontal plate part is welded to the lower surface part of the tank. At the same time, a space is provided between the bolt tightening portion provided on the lateral plate portion and the lower surface portion of the tank. Further, the welding lengths of the fillet welds to the tank at the edges of the seat plate are set to have a predetermined pitch.
【０００５】また本発明では、タンクの内部側の底面部
に、上記座板の長手方向と直交する方向へ向けてひずみ
応力分散用の板部材を溶着した。そして上記の場合板部
材を、その長手方向と直交する方向の断面形状が山形で
ある山形鋼に設定し、また上記板部材の縁部のタンク底
面部に対する隅肉溶接部の溶接長さを、所定のピッチで
間隔をおくようにした。Further, according to the present invention, a plate member for strain stress dispersion is welded to a bottom portion on the inner side of the tank in a direction orthogonal to the longitudinal direction of the seat plate. And in the above case, the plate member is set to a chevron steel whose cross-sectional shape in the direction orthogonal to the longitudinal direction thereof is chevron, and the welding length of the fillet weld portion to the tank bottom face portion of the edge of the plate member, The intervals were set at a predetermined pitch.
【０００６】本発明ではタンクの相対応する外側面と、
下面とのなす角部の長手方向に沿って長寸、しかも断面
形状が略Ｌ形の座板をそれぞれ設け、その座板の横板部
にボルト締付用のねじ穴付部材を溶着するとともに、上
記座板のたて板部をタンクの外側面部に、かつ横板部を
タンクの下面部に溶着したので、その座板を含めてタン
ク全体を一体形の箱形に形成することができた。そして
上記座板をタンク下面部の角部の長手方向に沿って長寸
に形成しているので、タンク及び座板に発生する応力を
分散できる。また上記座板の縁部のタンクに対する隅肉
溶接部の溶接長さを、所定のピッチで間隔をおくように
したので、いわゆるタップ溶接を行うことによりタンク
の溶接ひずみを最小限度に抑えることができる。According to the invention, the corresponding outer surface of the tank,
Along the longitudinal direction of the corner formed by the lower surface, seat plates each having a long L-shaped cross section are provided, and a screw hole member for bolt tightening is welded to the lateral plate of the seat plate. Since the vertical plate part of the seat plate is welded to the outer surface part of the tank and the horizontal plate part is welded to the lower surface part of the tank, the entire tank including the seat plate can be formed into an integral box shape. It was Further, since the seat plate is formed long along the longitudinal direction of the corner of the lower surface of the tank, the stress generated in the tank and the seat plate can be dispersed. Further, since the welding length of the fillet weld portion to the tank at the edge of the seat plate is set to have a predetermined pitch, it is possible to minimize the welding strain of the tank by performing so-called tap welding. it can.
【０００７】また本発明ではタンクの内部側の底面部に
上記座板の長手方向と直交する方向へ向けてひずみ応力
分散用の板部材を溶着したので、タンクに発生するひず
みの変位変形を小さく抑え、車体の振動などに起因する
応力を発生しにくくすることができる。そして上記の場
合板部材をその長手方向と直交する方向の断面形状が山
形である山形鋼に設定したので、その山形鋼をタンクの
底面部に山形状に溶接した構造は三角筒体をそなえた立
体構造となり、タンクのひずみ防止機能の効果を大きく
発揮することができる。また上記山形鋼の縁部のタンク
底面部に対する隅肉溶接部の溶接長さを所定のピッチで
間隔をおくようにしたので、いわゆるタップ溶接を行う
ことによりタンクの溶接ひずみを最小限度に抑えること
ができる。Further, in the present invention, since the plate member for strain stress dispersion is welded to the inner bottom surface of the tank in the direction orthogonal to the longitudinal direction of the seat plate, the displacement deformation of the strain generated in the tank is reduced. Therefore, it is possible to suppress the stress caused by the vibration of the vehicle body. And in the above case, the plate member was set to a chevron steel whose cross-sectional shape in the direction orthogonal to its longitudinal direction was chevron, so the chevron steel was welded to the bottom of the tank in a chevron shape with a triangular tube body. It has a three-dimensional structure, and can greatly exert the effect of the strain prevention function of the tank. Further, since the welding lengths of the fillet welds to the tank bottom of the angle steel are set to have a predetermined pitch, it is possible to minimize the welding strain of the tank by performing so-called tap welding. You can
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基いて詳細に説明する。図１は、本発明のタンク（本
実施例では燃料タンクである）７の正面図である。図に
おいて、８はタンク７の上面と左右の外側面にわたって
一枚板で成形した上面及び左右外側面板、９F は図示で
前側の外側面板、１０は下面板、１１F は図示で前側の
座板、１２は給油口である。なお図１における前側の外
側面板９F と下面板１０と後側の外側面板９R （後述す
る）は一枚板を曲げ加工して成形したものであるが、説
明の都合上、分割した符号を付している。図２は、図１
のＢより見た平面図である。図において、９R はタンク
７の後側の外側面板、１１R は後側の座板である。図３
は、図１のＣより見た右側面図である。図において、１
３a ，１３b ，１３c はタンク７の内部側の底面部すな
わち下面板１０の上面部に溶着したそれぞれ山形鋼であ
る。図４は、図１のＤより見た下面図である。図５は、
図２のＥ−Ｅ断面図である。図６は、図３におけるＦ部
の切開拡大図である。図において、１４V は座板１１R
のたて板部、１４H は座板１１R の横板部、１５は横板
部１４H に設けたボルト締付部、１６はボルト締付部１
５のねじ穴付ボス、１７はねじ穴付ボス１６に開穿して
いるねじ穴である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view of a tank (a fuel tank in this embodiment) 7 of the present invention. In the figure, 8 is an upper surface and left and right outer side plates formed by a single plate over the upper surface and left and right outer side surfaces of the tank 7, 9 F is an outer side surface plate on the front side in the drawing, 10 is a lower surface plate, and 11 F is a seat on the front side in the drawing. The plate 12 is a fuel filler port. The front outer side plate 9 F , the lower side plate 10 and the rear outer side plate 9 R (described later) in FIG. 1 are formed by bending a single plate, but for convenience of explanation, the reference numerals are divided. Is attached. 2 is shown in FIG.
It is the top view seen from B of FIG. In the figure, 9 R is an outer side plate on the rear side of the tank 7, and 11 R is a seat plate on the rear side. Figure 3
FIG. 3 is a right side view seen from C in FIG. 1. In the figure, 1
Reference numerals 3 a , 13 b , and 13 c are angle steels welded to the inner bottom surface of the tank 7, that is, the upper surface of the lower plate 10. FIG. 4 is a bottom view seen from D in FIG. Figure 5
FIG. 3 is a sectional view taken along line EE of FIG. 2. FIG. 6 is an enlarged incision view of the F portion in FIG. In the figure, 14 V is a seat plate 11 R
A vertical plate portion, 14 H is a horizontal plate portion of the seat plate 11 R , 15 is a bolt tightening portion provided on the horizontal plate portion 14 H , and 16 is a bolt tightening portion 1.
5 is a boss with a screw hole, and 17 is a screw hole opened in the boss with a screw hole 16.
【０００９】次に、本発明のタンク構造を図１〜図６に
ついて述べる。本発明ではタンク７の外側面板９F ，９
R と下面板１０とのそれぞれ角部に、たて板部（図６に
示す座板１１R のたて板部１４V であって、座板１１F
の側のたて板部も同様であるが符号を付した図示をして
いない）と横板部（図６に示す座板１１R の横板部１４
H であって、座板１１F の側の横板部も同様であるが符
号を付した図示をしていない）に屈曲せしめた断面形状
が略Ｌ形の座板１１R ，１１F を設け、その座板１１
R ，１１F のたて板部１４V （図６に示す座板１１R の
側を代表して説明する）を外側面板９R の外側面部に、
かつ横板部１４H を下面板１０の下面部に溶着するとと
もに、横板部１４H に設けたボルト締付部１５と、下面
板１０の下面部との間に間隔（図６に示す寸法Ｋなる間
隔）を設けた。そして上記の場合、相対応する外側面板
９R ，９F の外側面と、下面板１０の下面とのなす角部
の長手方向に沿って長寸（図１及び図４に示すように角
部の長手方向の全長、すなわち図示でタンク７の左右方
向の幅寸法よりは短い寸法にしている）の座板１１R，
１１F をそれぞれ設け、その座板１１R ，１１F の横板
部１４H にボルト（図示していない）締付用のねじ穴付
ボス１６を溶着し、また上記座板１１R ，１１F の縁部
のタンク７に対する隅肉溶接部（図６における符号１
８，１８’で示す部分）の溶接長さを、図４に示すよう
に所定のピッチＰ1 で間隔（間隔の寸法がｌ1 である）
をおくようにした。Next, the tank structure of the present invention will be described with reference to FIGS. In the present invention, the outer side plates 9 F , 9 of the tank 7 are
Each corner between R and the lower surface plate 10, a vertical plate portion 14 V of the seat plate 11 R illustrated vertical plate portion (in FIG. 6, the seat plate 11 F
The same applies to the vertical plate portion on the side of, but not shown with reference numerals) and the horizontal plate portion (the horizontal plate portion 14 of the seat plate 11 R shown in FIG. 6).
H and the horizontal plate portion on the side of the seat plate 11 F is the same, but the seat plates 11 R and 11 F having a substantially L-shaped cross section are provided by bending them (not shown with reference numerals). , Its seat 11
The vertical plate portions 14 V of R and 11 F (which will be described as representative of the side of the seat plate 11 R shown in FIG. 6) are provided on the outer surface portion of the outer surface plate 9 R ,
Dimensions and with welding the side plate portion 14 H to the lower surface of the lower face plate 10, a bolt fastening portion 15 provided in the lateral plate section 14 H, as shown in interval (Fig. 6 between the lower portion of the lower face plate 10 K interval) is provided. In the above case, the outer surface of the corresponding outer surface plates 9 R and 9 F and the lower surface of the lower surface plate 10 are elongated along the longitudinal direction of the corner (as shown in FIG. 1 and FIG. seat plate 11 R of the longitudinal direction of the full-length, i.e. the shorter dimension than the width dimension of the right and left direction of the tank 7 in the illustrated),
11 F and respectively, the seat plate 11 R, 11 horizontal plate portion 14 H to the bolt of F (not shown) the tapped hole with a boss 16 for fastening by welding, also the seat plate 11 R, 11 F Of the fillet welded to the tank 7 at the edge of the
8 and 18 '), the welding lengths are spaced at a predetermined pitch P 1 (the size of the spacing is l 1 ) as shown in FIG.
I put it.
【００１０】また本発明では、タンク７の内部側の底面
部すなわち下面板１０の上面側に、上記座板１１R ，１
１F の長手方向と直交する方向へ向けてひずみ応力分散
用の板部材として、断面形状が山形である山形鋼１３
a ，１３b ，１３c を溶着した。そして上記山形鋼１３
a ，１３b ，１３c の縁部の下面板１０上面部（すなわ
ちタンク７の底面部）に対する隅肉溶接部の溶接長さ
を、図６に示すように所定のピッチＰ2 で間隔（間隔の
寸法がｌ2 である）をおくようにした。Further, according to the present invention, the seat plates 11 R , 1 are provided on the inner bottom surface of the tank 7, that is, on the upper surface of the lower plate 10.
Angle-shaped steel 13 having a chevron cross-section as a plate member for strain stress dispersion in the direction orthogonal to the longitudinal direction of 1 F.
welded to a, 13 b, 13 c. And the angle steel 13
As shown in FIG. 6, the welding lengths of the fillet welds of the edges of a , 13 b , and 13 c with respect to the upper surface of the lower plate 10 (that is, the bottom surface of the tank 7) are spaced at a predetermined pitch P 2 (interval). Has a size of l 2 ).
【００１１】次に、本発明のタンク構造の作用について
述べる。本発明ではタンク７の相対応する外側面板９
R ，９F の外側面と、下面板１０の下面とのなす角部の
長手方向に沿って長寸、しかも断面形状が略Ｌ形の座板
１１R ，１１F をそれぞれ設け、その座板１１R ，１１
F の横板部１４H にボルト締付用のねじ穴付ボス１６を
溶着するとともに、上記座板１１R ，１１F のたて板部
１４V を外側面板９R の外側面部に、かつ横板部１４H
を下面板１０の下面部に溶着したので、その座板１１
R ，１１F を含めてタンク７全体を一体形の箱形に形成
することができた。そして上記座板１１R ，１１F をタ
ンク７下面部の角部の長手方向に沿って長寸に形成して
いるので、タンク７及び座板１１R ，１１F に発生する
応力を分散できる。また上記座板１１R ，１１F の縁部
のタンク７に対する隅肉溶接部の溶接長さを、所定のピ
ッチＰ1 で間隔（間隔寸法ｌ1 ）をおくようにしたの
で、いわゆるタップ溶接を行うことによりタンク７の溶
接ひずみを最小限度に抑えることができる。また座板１
１R ，１１F に形成したボルト締付用のねじ穴１７（図
４及び図６に示す）のピッチＰ3 を最大限の寸法に設定
できるとともに、車体に対する座板１１R ，１１F の取
付面精度を向上させることができる。なお本実施例では
座板１１R ，１１F の横板部１４H にボルト締付用のね
じ穴付ボス１６を溶着するようにしているが、ねじ穴付
ボスに限らず市販品のナットを溶着することも可能であ
る。Next, the operation of the tank structure of the present invention will be described. In the present invention, the corresponding outer side plate 9 of the tank 7
Seat plates 11 R and 11 F each having a substantially L-shaped cross section are provided along the longitudinal direction of the corners formed by the outer surfaces of R and 9 F and the lower surface of the bottom plate 10, and the seat plates are provided. 11 R , 11
The boss 16 with a screw hole for bolt tightening is welded to the horizontal plate portion 14 H of F , and the vertical plate portion 14 V of the seat plates 11 R and 11 F is attached to the outer side surface portion of the outer side surface plate 9 R as well as the side surface. Plate 14 H
Is welded to the lower surface of the lower surface plate 10, the seat plate 11
The entire tank 7 including R and 11 F could be formed into an integral box shape. Since the seat plates 11 R and 11 F are formed to be long along the longitudinal direction of the corners of the lower surface of the tank 7, the stress generated in the tank 7 and the seat plates 11 R and 11 F can be dispersed. Further, since the welding lengths of the fillet welded portions of the edge portions of the seat plates 11 R and 11 F to the tank 7 are set to have a predetermined pitch P 1 at intervals (interval dimension l 1 ), so-called tap welding is performed. By doing so, the welding strain of the tank 7 can be minimized. Also seat plate 1
The pitch P 3 of the screw holes 17 (shown in FIGS. 4 and 6) for tightening bolts formed in 1 R and 11 F can be set to the maximum size, and the seat plates 11 R and 11 F can be attached to the vehicle body. The surface accuracy can be improved. In this embodiment, the boss 16 with a screw hole for bolting is welded to the horizontal plate portion 14 H of the seat plates 11 R and 11 F , but a commercially available nut is not limited to the boss with a screw hole. It is also possible to weld.
【００１２】また本発明ではタンク７の内部側の底面部
すなわち下面板１０の上面側に、上記座板１１R ，１１
F の長手方向と直交する方向へ向けてひずみ応力分散用
の板部材として山形鋼１３a ，１３b ，１３c を溶着し
たので、タンク７に発生するひずみの変位変形を小さく
抑え、車体の振動などに起因する応力を発生しにくくす
ることができる。この場合上記山形鋼１３a ，１３b ，
１３c をタンク７の底面部に山形状に溶接した構造は三
角筒体をそなえた立体構造となり、タンク７のひずみ防
止機能の効果を大きく発揮することができる。また上記
山形鋼１３a ，１３b ，１３c の縁部のタンク７底面部
に対する隅肉溶接部の溶接長さを、図６に示すように所
定のピッチＰ2 で間隔（間隔寸法ｌ2 ）をおくようにし
たので、いわゆるタップ溶接を行うことによりタンク７
の溶接ひずみを最小限度に抑えることができる。Further, according to the present invention, the seat plates 11 R and 11 R are provided on the inner bottom surface of the tank 7, that is, on the upper surface of the lower plate 10.
F angle steel 13 as a plate member for stress dispersion strain toward the direction perpendicular to the longitudinal direction of a, 13 b, because the 13 c welded, and with minimal displacement deformation of the strain generated in the tank 7, the vehicle body vibration It is possible to make it difficult to generate stress due to the above. In this case, the angle steels 13a , 13b ,
The structure in which 13 c is welded to the bottom surface of the tank 7 in a mountain shape is a three-dimensional structure having a triangular tubular body, and the effect of the strain prevention function of the tank 7 can be greatly exerted. Further, as shown in FIG. 6, the welding lengths of the fillet welds to the bottom surface of the tank 7 at the edges of the angle steels 13a , 13b , 13c are spaced at a predetermined pitch P 2 (interval dimension l 2 ). Since it was put on, the tank 7
Welding strain can be minimized.
【００１３】[0013]
【発明の効果】本発明ではタンクの相対応する外側面
と、下面とのなす角部の長手方向に沿って長寸、しかも
断面形状が略Ｌ形の座板をそれぞれ設け、その座板の横
板部にボルト締付用のねじ穴付部材を溶着するととも
に、上記座板のたて板部をタンクの外側面部に、かつ横
板部をタンクの下面部に溶着したので、その座板を含め
てタンク全体を一体形の箱形に形成することができた。
そして上記座板をタンク下面部の角部の長手方向に沿っ
て長寸に形成しているので、タンク及び座板に発生する
応力を分散できる。また上記座板の縁部のタンクに対す
る隅肉溶接部の溶接長さを、所定のピッチで間隔をおく
ようにしたので、いわゆるタップ溶接を行うことにより
タンクの溶接ひずみを最小限度に抑えることができる。
また本発明ではタンクの内部側の底面部すなわち下面板
の上面側に、上記座板の長手方向と直交する方向へ向け
てひずみ応力分散用の板部材として山形鋼を溶着したの
で、タンクに発生するひずみの変位変形を小さく抑え、
車体の振動などに起因する応力を発生しにくくすること
ができる。この場合上記山形鋼をタンクの底面部に山形
状に溶接した構造は三角筒体をそなえた立体構造とな
り、タンクのひずみ防止機能の効果を大きく発揮するこ
とができる。また上記山形鋼の縁部のタンク底面部に対
する隅肉溶接部の溶接長さを所定のピッチで間隔をおく
ようにしたので、いわゆるタップ溶接を行うことにより
タンクの溶接ひずみを最小限度に抑えることができる。
したがって本発明のタンク構造をそなえた建設機械で
は、タンクの取付用座板およびタンク下部に発生する溶
接ひずみ，応力などを分散して緩和できるので、タンク
の疲労耐用寿命を延ばし、そのメンテナンス性を向上さ
せることができる。According to the present invention, the seat plates having long L-shaped cross-sections are provided along the longitudinal direction of the corners formed by the corresponding outer surface and the lower surface of the tank. A member with screw holes for bolting was welded to the horizontal plate, and the vertical plate of the seat plate was welded to the outer surface of the tank and the horizontal plate was welded to the lower surface of the tank. It was possible to form the entire tank including the above into an integral box shape.
Further, since the seat plate is formed long along the longitudinal direction of the corner of the lower surface of the tank, the stress generated in the tank and the seat plate can be dispersed. Further, since the welding length of the fillet weld portion to the tank at the edge of the seat plate is set to have a predetermined pitch, it is possible to minimize the welding strain of the tank by performing so-called tap welding. it can.
Further, in the present invention, since the angle steel is welded to the inner bottom surface of the tank, that is, the upper surface of the lower surface plate as a plate member for strain stress dispersion in the direction orthogonal to the longitudinal direction of the seat plate, it is generated in the tank. Displacement of strain to be suppressed,
It is possible to make it difficult to generate stress due to vibration of the vehicle body. In this case, the structure in which the angle steel is welded to the bottom surface of the tank in a mountain shape is a three-dimensional structure having a triangular cylinder, and the effect of the strain prevention function of the tank can be greatly exerted. Further, since the welding lengths of the fillet welds to the tank bottom of the angle steel are set to have a predetermined pitch, it is possible to minimize the welding strain of the tank by performing so-called tap welding. You can
Therefore, in the construction machine equipped with the tank structure of the present invention, welding strain, stress, etc. generated in the seat plate for mounting the tank and the lower part of the tank can be dispersed and relaxed, so that the fatigue life of the tank is extended and its maintainability is improved. Can be improved.
【図１】本発明のタンクの正面図である。FIG. 1 is a front view of a tank of the present invention.
【図２】図１のＢより見た平面図である。FIG. 2 is a plan view seen from B of FIG.
【図３】図１のＣより見た右側面図である。FIG. 3 is a right side view seen from C in FIG.
【図４】図１のＤより見た下面図である。FIG. 4 is a bottom view seen from D in FIG. 1.
【図５】図２のＥ−Ｅ断面図である。5 is a cross-sectional view taken along line EE of FIG.
【図６】図３におけるＦ部の切開拡大図である。FIG. 6 is an enlarged view of an incision of an F portion in FIG.
【図７】従来技術の一実施例タンク構造を示す要部切開
図である。FIG. 7 is a fragmentary cutaway view showing a tank structure of an embodiment of the prior art.
【図８】図７のＡ−Ａより見た図である。8 is a diagram viewed from AA in FIG. 7. FIG.
１，７ タンク ３，１６ ねじ穴付ボス ９F ，９R 外側面板 １０ 下面板 １１F ，１１R 座板 １３a ，１３b ，１３c 山形鋼（板部材） １４V たて板部 １４H 横板部 １５ ボルト締付部 １７ ねじ穴1,7 Tank 3,16 Screw hole boss 9 F , 9 R Outer side plate 10 Lower face plate 11 F , 11 R Seat plate 13 a , 13 b , 13 c Angle steel (plate member) 14 V Vertical plate part 14 H Horizontal plate part 15 Bolt tightening part 17 Screw hole
フロントページの続き (56)参考文献 実開 平７−25303（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) E02F 9/00 F15B 1/00 - 7/10 B60K 15/03 - 15/077 Continuation of the front page (56) Bibliographical reference 7-25303 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) E02F 9/00 F15B 1/00-7/10 B60K 15 / 03-15/077
Claims (5)
タンクの下面部に車体に対する取付用の座板を溶着し、
その座板をボルト締付により車体に固定している燃料タ
ンク，作動油タンクなどのタンクにおいて、タンクの相
対応する外側面と、下面とのなすそれぞれの角部の長手
方向に沿って、たて板部と横板部に屈曲せしめた断面形
状が略Ｌ形で、且つ長寸の座板をそれぞれ設け、それぞ
れの座板のたて板部をタンクの外側面部に、かつ横板部
をタンクの下面部に溶着するとともに、横板部に設けた
ボルト締付部と、タンクの下面部との間に間隔を設けた
ことを特徴とする建設機械のタンク構造。1. A thin steel plate is formed in a box-shaped tank, and a seat plate for mounting on a vehicle body is welded to the lower surface of the tank,
A fuel tank that is fixed to the vehicle body by bolts fastening the seat plate, in tanks, such as hydraulic oil tank, the phase of the tank
The length of each corner between the corresponding outer surface and the lower surface
Along the direction, in the vertical plate portion and the transverse plate cross section substantially L-shaped was allowed bent portion, and provided Nagasun the seat plate, respectively, it
The vertical plate of the seat plate is welded to the outer surface of the tank, and the horizontal plate is welded to the lower surface of the tank, and between the bolt tightening part provided on the horizontal plate and the lower surface of the tank. A tank structure for construction machinery characterized by having a gap.
接部の溶接長さを、所定のピッチで間隔をおくようにしMake sure that the weld lengths of the contact parts are spaced at a specified pitch.
たことを特徴とする請求項１記載の建設機械のタンク構The tank structure for a construction machine according to claim 1, wherein
造。Structure.
板の長手方向と直交する方向へ向けてひずみ応力分散用For strain stress distribution in the direction orthogonal to the longitudinal direction of the plate
の板部材を溶着したことを特徴とする請求項１または２The plate member according to claim 1 is welded.
記載の建設機械のタンク構造。The tank structure of the described construction machine.
方向の断面形状が山形である山形鋼に設定したことを特The special feature is that the angle section steel is angle-shaped.
徴とする請求項３記載の建設機械のタンク構造。The tank structure for a construction machine according to claim 3, which is used as a characteristic.
る隅肉溶接部の溶接長さを、所定のピッチで間隔をおくThe weld lengths of fillet welds are spaced at a specified pitch.
ようにしたことを特徴とする請求項３または４記載の建The construction according to claim 3 or 4, characterized in that
設機械のタンク構造。Construction machine tank structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14819596A JP3454637B2 (en) | 1996-05-17 | 1996-05-17 | Construction machinery tank structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14819596A JP3454637B2 (en) | 1996-05-17 | 1996-05-17 | Construction machinery tank structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09302716A JPH09302716A (en) | 1997-11-25 |
| JP3454637B2 true JP3454637B2 (en) | 2003-10-06 |
Family
ID=15447389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14819596A Expired - Lifetime JP3454637B2 (en) | 1996-05-17 | 1996-05-17 | Construction machinery tank structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3454637B2 (en) |
-
1996
- 1996-05-17 JP JP14819596A patent/JP3454637B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09302716A (en) | 1997-11-25 |
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